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<a name="libcroco-cr-sel-eng"></a><div class="titlepage"></div>
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<td valign="top">
<h2><span class="refentrytitle"><a name="libcroco-cr-sel-eng.top_of_page"></a>cr-sel-eng</span></h2>
<p>cr-sel-eng</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="libcroco-cr-sel-eng.functions"></a><h2>Functions</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="libcroco-cr-sel-eng.html#CRPseudoClassSelectorHandler" title="CRPseudoClassSelectorHandler ()">*CRPseudoClassSelectorHandler</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="libcroco-cr-sel-eng.html#CRSelEng" title="struct CRSelEng"><span class="returnvalue">CRSelEng</span></a> *
</td>
<td class="function_name">
<a class="link" href="libcroco-cr-sel-eng.html#cr-sel-eng-new" title="cr_sel_eng_new ()">cr_sel_eng_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">enum <a class="link" href="libcroco-cr-utils.html#CRStatus" title="enum CRStatus"><span class="returnvalue">CRStatus</span></a>
</td>
<td class="function_name">
<a class="link" href="libcroco-cr-sel-eng.html#cr-sel-eng-register-pseudo-class-sel-handler" title="cr_sel_eng_register_pseudo_class_sel_handler ()">cr_sel_eng_register_pseudo_class_sel_handler</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">enum <a class="link" href="libcroco-cr-utils.html#CRStatus" title="enum CRStatus"><span class="returnvalue">CRStatus</span></a>
</td>
<td class="function_name">
<a class="link" href="libcroco-cr-sel-eng.html#cr-sel-eng-unregister-pseudo-class-sel-handler" title="cr_sel_eng_unregister_pseudo_class_sel_handler ()">cr_sel_eng_unregister_pseudo_class_sel_handler</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">enum <a class="link" href="libcroco-cr-utils.html#CRStatus" title="enum CRStatus"><span class="returnvalue">CRStatus</span></a>
</td>
<td class="function_name">
<a class="link" href="libcroco-cr-sel-eng.html#cr-sel-eng-unregister-all-pseudo-class-sel-handlers" title="cr_sel_eng_unregister_all_pseudo_class_sel_handlers ()">cr_sel_eng_unregister_all_pseudo_class_sel_handlers</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">enum <a class="link" href="libcroco-cr-utils.html#CRStatus" title="enum CRStatus"><span class="returnvalue">CRStatus</span></a>
</td>
<td class="function_name">
<a class="link" href="libcroco-cr-sel-eng.html#cr-sel-eng-get-pseudo-class-selector-handler" title="cr_sel_eng_get_pseudo_class_selector_handler ()">cr_sel_eng_get_pseudo_class_selector_handler</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">enum <a class="link" href="libcroco-cr-utils.html#CRStatus" title="enum CRStatus"><span class="returnvalue">CRStatus</span></a>
</td>
<td class="function_name">
<a class="link" href="libcroco-cr-sel-eng.html#cr-sel-eng-matches-node" title="cr_sel_eng_matches_node ()">cr_sel_eng_matches_node</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">enum <a class="link" href="libcroco-cr-utils.html#CRStatus" title="enum CRStatus"><span class="returnvalue">CRStatus</span></a>
</td>
<td class="function_name">
<a class="link" href="libcroco-cr-sel-eng.html#cr-sel-eng-get-matched-rulesets" title="cr_sel_eng_get_matched_rulesets ()">cr_sel_eng_get_matched_rulesets</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">enum <a class="link" href="libcroco-cr-utils.html#CRStatus" title="enum CRStatus"><span class="returnvalue">CRStatus</span></a>
</td>
<td class="function_name">
<a class="link" href="libcroco-cr-sel-eng.html#cr-sel-eng-get-matched-properties-from-cascade" title="cr_sel_eng_get_matched_properties_from_cascade ()">cr_sel_eng_get_matched_properties_from_cascade</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">enum <a class="link" href="libcroco-cr-utils.html#CRStatus" title="enum CRStatus"><span class="returnvalue">CRStatus</span></a>
</td>
<td class="function_name">
<a class="link" href="libcroco-cr-sel-eng.html#cr-sel-eng-get-matched-style" title="cr_sel_eng_get_matched_style ()">cr_sel_eng_get_matched_style</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="libcroco-cr-sel-eng.html#cr-sel-eng-destroy" title="cr_sel_eng_destroy ()">cr_sel_eng_destroy</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="libcroco-cr-sel-eng.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="libcroco-cr-sel-eng.html#CRSelEng" title="struct CRSelEng">CRSelEng</a></td>
</tr>
<tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="libcroco-cr-sel-eng.html#CRSelEngPriv" title="CRSelEngPriv">CRSelEngPriv</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="libcroco-cr-sel-eng.description"></a><h2>Description</h2>
</div>
<div class="refsect1">
<a name="libcroco-cr-sel-eng.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="CRPseudoClassSelectorHandler"></a><h3>CRPseudoClassSelectorHandler ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
<span class="c_punctuation">(</span>*CRPseudoClassSelectorHandler<span class="c_punctuation">)</span> (<em class="parameter"><code><a class="link" href="libcroco-cr-sel-eng.html#CRSelEng" title="struct CRSelEng"><span class="type">CRSelEng</span></a> *a_this</code></em>,
                                 <em class="parameter"><code><a class="link" href="libcroco-cr-additional-sel.html#CRAdditionalSel" title="struct CRAdditionalSel"><span class="type">CRAdditionalSel</span></a> *a_add_sel</code></em>,
                                 <em class="parameter"><code><span class="type">xmlNode</span> *a_node</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="cr-sel-eng-new"></a><h3>cr_sel_eng_new ()</h3>
<pre class="programlisting"><a class="link" href="libcroco-cr-sel-eng.html#CRSelEng" title="struct CRSelEng"><span class="returnvalue">CRSelEng</span></a> *
cr_sel_eng_new (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>Returns the newly built instance of <a class="link" href="libcroco-cr-sel-eng.html#CRSelEng" title="struct CRSelEng"><span class="type">CRSelEng</span></a> of
NULL if an error occurs.</p>
</div>
<hr>
<div class="refsect2">
<a name="cr-sel-eng-register-pseudo-class-sel-handler"></a><h3>cr_sel_eng_register_pseudo_class_sel_handler ()</h3>
<pre class="programlisting">enum <a class="link" href="libcroco-cr-utils.html#CRStatus" title="enum CRStatus"><span class="returnvalue">CRStatus</span></a>
cr_sel_eng_register_pseudo_class_sel_handler
                               (<em class="parameter"><code><a class="link" href="libcroco-cr-sel-eng.html#CRSelEng" title="struct CRSelEng"><span class="type">CRSelEng</span></a> *a_this</code></em>,
                                <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guchar"><span class="type">guchar</span></a> *a_pseudo_class_sel_name</code></em>,
                                <em class="parameter"><code><span class="type">enum CRPseudoType</span> a_pseudo_class_type</code></em>,
                                <em class="parameter"><code><a class="link" href="libcroco-cr-sel-eng.html#CRPseudoClassSelectorHandler" title="CRPseudoClassSelectorHandler ()"><span class="type">CRPseudoClassSelectorHandler</span></a> a_handler</code></em>);</pre>
<p>Adds a new handler entry in the handlers entry table.</p>
<p>Returns CR_OK, upon successful completion, an error code otherwise.</p>
<div class="refsect3">
<a name="id-1.2.17.6.4.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>a_this</p></td>
<td class="parameter_description"><p>the current instance of <a class="link" href="libcroco-cr-sel-eng.html#CRSelEng" title="struct CRSelEng"><span class="type">CRSelEng</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>a_pseudo_class_sel_name</p></td>
<td class="parameter_description"><p>the name of the pseudo class selector.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>a_pseudo_class_type</p></td>
<td class="parameter_description"><p>the type of the pseudo class selector.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>a_handler</p></td>
<td class="parameter_description"><p>the actual handler or callback to be called during
the selector evaluation process.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="cr-sel-eng-unregister-pseudo-class-sel-handler"></a><h3>cr_sel_eng_unregister_pseudo_class_sel_handler ()</h3>
<pre class="programlisting">enum <a class="link" href="libcroco-cr-utils.html#CRStatus" title="enum CRStatus"><span class="returnvalue">CRStatus</span></a>
cr_sel_eng_unregister_pseudo_class_sel_handler
                               (<em class="parameter"><code><a class="link" href="libcroco-cr-sel-eng.html#CRSelEng" title="struct CRSelEng"><span class="type">CRSelEng</span></a> *a_this</code></em>,
                                <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guchar"><span class="type">guchar</span></a> *a_pseudo_class_sel_name</code></em>,
                                <em class="parameter"><code><span class="type">enum CRPseudoType</span> a_pseudo_class_type</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="cr-sel-eng-unregister-all-pseudo-class-sel-handlers"></a><h3>cr_sel_eng_unregister_all_pseudo_class_sel_handlers ()</h3>
<pre class="programlisting">enum <a class="link" href="libcroco-cr-utils.html#CRStatus" title="enum CRStatus"><span class="returnvalue">CRStatus</span></a>
cr_sel_eng_unregister_all_pseudo_class_sel_handlers
                               (<em class="parameter"><code><a class="link" href="libcroco-cr-sel-eng.html#CRSelEng" title="struct CRSelEng"><span class="type">CRSelEng</span></a> *a_this</code></em>);</pre>
<p>Unregisters all the pseudo class sel handlers
and frees all the associated allocated datastructures.</p>
<p>Returns CR_OK upon succesful completion, an error code
otherwise.</p>
<div class="refsect3">
<a name="id-1.2.17.6.6.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>a_this</p></td>
<td class="parameter_description"><p>the current instance of <a class="link" href="libcroco-cr-sel-eng.html#CRSelEng" title="struct CRSelEng"><span class="type">CRSelEng</span></a> .</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="cr-sel-eng-get-pseudo-class-selector-handler"></a><h3>cr_sel_eng_get_pseudo_class_selector_handler ()</h3>
<pre class="programlisting">enum <a class="link" href="libcroco-cr-utils.html#CRStatus" title="enum CRStatus"><span class="returnvalue">CRStatus</span></a>
cr_sel_eng_get_pseudo_class_selector_handler
                               (<em class="parameter"><code><a class="link" href="libcroco-cr-sel-eng.html#CRSelEng" title="struct CRSelEng"><span class="type">CRSelEng</span></a> *a_this</code></em>,
                                <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guchar"><span class="type">guchar</span></a> *a_pseudo_class_sel_name</code></em>,
                                <em class="parameter"><code><span class="type">enum CRPseudoType</span> a_pseudo_class_type</code></em>,
                                <em class="parameter"><code><a class="link" href="libcroco-cr-sel-eng.html#CRPseudoClassSelectorHandler" title="CRPseudoClassSelectorHandler ()"><span class="type">CRPseudoClassSelectorHandler</span></a> *a_handler</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="cr-sel-eng-matches-node"></a><h3>cr_sel_eng_matches_node ()</h3>
<pre class="programlisting">enum <a class="link" href="libcroco-cr-utils.html#CRStatus" title="enum CRStatus"><span class="returnvalue">CRStatus</span></a>
cr_sel_eng_matches_node (<em class="parameter"><code><a class="link" href="libcroco-cr-sel-eng.html#CRSelEng" title="struct CRSelEng"><span class="type">CRSelEng</span></a> *a_this</code></em>,
                         <em class="parameter"><code><a class="link" href="libcroco-cr-simple-sel.html#CRSimpleSel" title="struct CRSimpleSel"><span class="type">CRSimpleSel</span></a> *a_sel</code></em>,
                         <em class="parameter"><code><span class="type">xmlNode</span> *a_node</code></em>,
                         <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> *a_result</code></em>);</pre>
<p>Evaluates a chained list of simple selectors (known as a css2 selector).
Says wheter if this selector matches the xml node given in parameter or
not.</p>
<p>Returns the CR_OK if the selection ran correctly, an error code otherwise.</p>
<div class="refsect3">
<a name="id-1.2.17.6.8.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>a_this</p></td>
<td class="parameter_description"><p>the selection engine.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>a_sel</p></td>
<td class="parameter_description"><p>the simple selector against which the xml node
is going to be matched.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>a_node</p></td>
<td class="parameter_description"><p>the node against which the selector is going to be matched.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>a_result</p></td>
<td class="parameter_description"><p>out parameter. The result of the match. Is set to
TRUE if the selector matches the node, FALSE otherwise. This value
is considered if and only if this functions returns CR_OK.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="cr-sel-eng-get-matched-rulesets"></a><h3>cr_sel_eng_get_matched_rulesets ()</h3>
<pre class="programlisting">enum <a class="link" href="libcroco-cr-utils.html#CRStatus" title="enum CRStatus"><span class="returnvalue">CRStatus</span></a>
cr_sel_eng_get_matched_rulesets (<em class="parameter"><code><a class="link" href="libcroco-cr-sel-eng.html#CRSelEng" title="struct CRSelEng"><span class="type">CRSelEng</span></a> *a_this</code></em>,
                                 <em class="parameter"><code><a class="link" href="libcroco-cr-statement.html#CRStyleSheet" title="CRStyleSheet"><span class="type">CRStyleSheet</span></a> *a_sheet</code></em>,
                                 <em class="parameter"><code><span class="type">xmlNode</span> *a_node</code></em>,
                                 <em class="parameter"><code><a class="link" href="libcroco-cr-declaration.html#CRStatement" title="CRStatement"><span class="type">CRStatement</span></a> ***a_rulesets</code></em>,
                                 <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gulong"><span class="type">gulong</span></a> *a_len</code></em>);</pre>
<p>Returns an array of pointers to selectors that matches
the xml node given in parameter.</p>
<p>Returns CR_OK upon sucessfull completion, an error code otherwise.</p>
<div class="refsect3">
<a name="id-1.2.17.6.9.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>a_this</p></td>
<td class="parameter_description"><p>the current instance of the selection engine.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>a_sheet</p></td>
<td class="parameter_description"><p>the stylesheet that holds the selectors.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>a_node</p></td>
<td class="parameter_description"><p>the xml node to consider during the walk thru
the stylesheet.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>a_rulesets</p></td>
<td class="parameter_description"><p>out parameter. A pointer to an array of
rulesets statement pointers. *a_rulesets is allocated by
this function and must be freed by the caller. However, the caller
must not alter the rulesets statements pointer because they
point to statements that are still in the css stylesheet.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>a_len</p></td>
<td class="parameter_description"><p>the length of *a_ruleset.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="cr-sel-eng-get-matched-properties-from-cascade"></a><h3>cr_sel_eng_get_matched_properties_from_cascade ()</h3>
<pre class="programlisting">enum <a class="link" href="libcroco-cr-utils.html#CRStatus" title="enum CRStatus"><span class="returnvalue">CRStatus</span></a>
cr_sel_eng_get_matched_properties_from_cascade
                               (<em class="parameter"><code><a class="link" href="libcroco-cr-sel-eng.html#CRSelEng" title="struct CRSelEng"><span class="type">CRSelEng</span></a> *a_this</code></em>,
                                <em class="parameter"><code><a class="link" href="libcroco-cr-cascade.html#CRCascade" title="struct CRCascade"><span class="type">CRCascade</span></a> *a_cascade</code></em>,
                                <em class="parameter"><code><span class="type">xmlNode</span> *a_node</code></em>,
                                <em class="parameter"><code><a class="link" href="libcroco-cr-prop-list.html#CRPropList" title="struct CRPropList"><span class="type">CRPropList</span></a> **a_props</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="cr-sel-eng-get-matched-style"></a><h3>cr_sel_eng_get_matched_style ()</h3>
<pre class="programlisting">enum <a class="link" href="libcroco-cr-utils.html#CRStatus" title="enum CRStatus"><span class="returnvalue">CRStatus</span></a>
cr_sel_eng_get_matched_style (<em class="parameter"><code><a class="link" href="libcroco-cr-sel-eng.html#CRSelEng" title="struct CRSelEng"><span class="type">CRSelEng</span></a> *a_this</code></em>,
                              <em class="parameter"><code><a class="link" href="libcroco-cr-cascade.html#CRCascade" title="struct CRCascade"><span class="type">CRCascade</span></a> *a_cascade</code></em>,
                              <em class="parameter"><code><span class="type">xmlNode</span> *a_node</code></em>,
                              <em class="parameter"><code><a class="link" href="libcroco-cr-style.html#CRStyle" title="struct CRStyle"><span class="type">CRStyle</span></a> *a_parent_style</code></em>,
                              <em class="parameter"><code><a class="link" href="libcroco-cr-style.html#CRStyle" title="struct CRStyle"><span class="type">CRStyle</span></a> **a_style</code></em>,
                              <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> a_set_props_to_initial_values</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="cr-sel-eng-destroy"></a><h3>cr_sel_eng_destroy ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cr_sel_eng_destroy (<em class="parameter"><code><a class="link" href="libcroco-cr-sel-eng.html#CRSelEng" title="struct CRSelEng"><span class="type">CRSelEng</span></a> *a_this</code></em>);</pre>
<p>The destructor of <a class="link" href="libcroco-cr-sel-eng.html#CRSelEng" title="struct CRSelEng"><span class="type">CRSelEng</span></a></p>
<div class="refsect3">
<a name="id-1.2.17.6.12.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>a_this</p></td>
<td class="parameter_description"><p>the current instance of the selection engine.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="libcroco-cr-sel-eng.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="CRSelEng"></a><h3>struct CRSelEng</h3>
<pre class="programlisting">struct CRSelEng {
	CRSelEngPriv *priv ;
};
</pre>
</div>
<hr>
<div class="refsect2">
<a name="CRSelEngPriv"></a><h3>CRSelEngPriv</h3>
<pre class="programlisting">typedef struct _CRSelEngPriv CRSelEngPriv;</pre>
</div>
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